--- /dev/null	2019-11-08 09:42:42.340406263 +0100
+++ new/src/hotspot/os/linux/cgroupV2Subsystem_linux.hpp	2019-11-08 15:01:43.363164049 +0100
@@ -0,0 +1,92 @@
+/*
+ * Copyright (c) 2019, Red Hat Inc.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#ifndef CGROUP_V2_SUBSYSTEM_LINUX_HPP
+#define CGROUP_V2_SUBSYSTEM_LINUX_HPP
+
+#include "cgroupSubsystem_linux.hpp"
+
+class CgroupV2Controller: public CgroupController {
+  private:
+    /* the mount path of the cgroup v2 hierarchy */
+    char *_mount_path;
+    /* The cgroup path for the controller */
+    char *_cgroup_path;
+
+    /* Constructed full path to the subsystem directory */
+    char *_path;
+    static char* construct_path(char* mount_path, char *cgroup_path);
+
+  public:
+    CgroupV2Controller(char * mount_path, char *cgroup_path) {
+      _mount_path = mount_path;
+      _cgroup_path = os::strdup(cgroup_path);
+      _path = construct_path(mount_path, cgroup_path);
+    }
+
+    char *subsystem_path() { return _path; }
+};
+
+class CgroupV2Subsystem: public CgroupSubsystem {
+  private:
+    /* One unified controller */
+    CgroupController* _unified = NULL;
+    /* Caching wrappers for cpu/memory metrics */
+    CachingCgroupController* _memory = NULL;
+    CachingCgroupController* _cpu = NULL;
+    /* synthesized memory max usage counter */
+    volatile jlong _memory_max_usage;
+
+    char *mem_limit_val();
+    char *mem_swp_limit_val();
+    char *mem_soft_limit_val();
+    char *cpu_quota_val();
+    jlong limit_from_str(char* limit_str);
+
+  public:
+    CgroupV2Subsystem(CgroupController * unified) {
+      _unified = unified;
+      _memory = new CachingCgroupController(unified);
+      _cpu = new CachingCgroupController(unified);
+      _memory_max_usage = min_jlong;
+    }
+
+    jlong read_memory_limit_in_bytes();
+    int cpu_quota();
+    int cpu_period();
+    int cpu_shares();
+    jlong memory_and_swap_limit_in_bytes();
+    jlong memory_soft_limit_in_bytes();
+    jlong memory_usage_in_bytes();
+    jlong memory_max_usage_in_bytes();
+    char * cpu_cpuset_cpus();
+    char * cpu_cpuset_memory_nodes();
+    const char * container_type() {
+      return "cgroupv2";
+    }
+    CachingCgroupController * memory_controller() { return _memory; }
+    CachingCgroupController * cpu_controller() { return _cpu; }
+};
+
+#endif // CGROUP_V2_SUBSYSTEM_LINUX_HPP